// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
// http://github.com/jskeet/dotnet-protobufs/
// Original C++/Java/Python code:
// http://code.google.com/p/protobuf/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
using System;

namespace Google.ProtocolBuffers.Descriptors {
  /// <summary>
  /// Thrown when building descriptors fails because the source DescriptorProtos
  /// are not valid.
  /// </summary>
  public sealed class DescriptorValidationException : Exception {

    private readonly String name;
    private readonly IMessage proto;
    private readonly string description;

    /// <value>
    /// The full name of the descriptor where the error occurred.
    /// </value>
    public String ProblemSymbolName { 
      get { return name; }
    }

    /// <value>
    /// The protocol message representation of the invalid descriptor.
    /// </value>
    public IMessage ProblemProto {
      get { return proto; }
    }

    /// <value>
    /// A human-readable description of the error. (The Message property
    /// is made up of the descriptor's name and this description.)
    /// </value>
    public string Description {
      get { return description; }
    }

    internal DescriptorValidationException(IDescriptor problemDescriptor, string description) :
        base(problemDescriptor.FullName + ": " + description) {

      // Note that problemDescriptor may be partially uninitialized, so we
      // don't want to expose it directly to the user.  So, we only provide
      // the name and the original proto.
      name = problemDescriptor.FullName;
      proto = problemDescriptor.Proto;
      this.description = description;
    }

    internal DescriptorValidationException(IDescriptor problemDescriptor, string description, Exception cause) :
        base(problemDescriptor.FullName + ": " + description, cause) {

      name = problemDescriptor.FullName;
      proto = problemDescriptor.Proto;
      this.description = description;
    }
  }
}
